US4853052A - Method for producing a pyrotechnical charge - Google Patents

Method for producing a pyrotechnical charge Download PDF

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Publication number
US4853052A
US4853052A US07/248,707 US24870788A US4853052A US 4853052 A US4853052 A US 4853052A US 24870788 A US24870788 A US 24870788A US 4853052 A US4853052 A US 4853052A
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US
United States
Prior art keywords
weight
zirconium
charges
titanium
dioxide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/248,707
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English (en)
Inventor
Staffan Calsson
Tore Boberg
Conny Sjogvist
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saab Bofors AB
Original Assignee
Bofors AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bofors AB filed Critical Bofors AB
Assigned to AKTIEBOLAGET BOFORS reassignment AKTIEBOLAGET BOFORS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BOBERG, TORE, CALSSON, STAFFAN, SJOQVIST, CONNY
Application granted granted Critical
Publication of US4853052A publication Critical patent/US4853052A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C9/00—Chemical contact igniters; Chemical lighters
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C06B33/12—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being two or more oxygen-yielding compounds
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C5/00—Fuses, e.g. fuse cords
    • C06C5/06—Fuse igniting means; Fuse connectors

Definitions

  • the present invention relates to a new type of pyrotechnical charge for ignition and delay purposes.
  • the burning properties of the pyrotechnical charge may thus, within its own fundamental characteristics, be modified from rapid cascade combustion with continually ejected glowing particles as required by an ignition charge, to the delay charge version with its calm and clearly defined behavior with respect to rate of burning.
  • the present invention also relates to a particularly preferred method of producing the pyrotechnical charge in question. Within the percentage concentrations characteristic of the present invention, the pyrotechnical charge may be given an optional rate of burning of between 3 and 150 mm/sec.
  • the perhaps most manifest advantage inherent in the pyrotechnical charge according to the present invention is that the charge solely includes such active components as themselves do not react with water and as are sufficiently sparingly soluble in water to make it possible to mix and granulate the pyrotechnical charge wholly in water.
  • the binder included in the pyrotechnical charge is an aqueous dispersed acrylate, making it possible to add the binder in the mixing water and thereby to obtain a high strength of the finished granulate and molded bodies.
  • the pyrotechnical charge according to the present invention thus satisfies a well-known desire on the manufacturing side of this art.
  • the fact that its rate of burning, by variations of the included components within the percentage concentrations characteristic of the present invention, may also be regulated within such different values that the pyrotechnical charge may be manufactured as either a delay or an ignition charge renders the pyrotechnical charge according to the present invention doubly interesting.
  • the pyrotechnical charge according to the present invention may thus be given a desired rate of burning of between 3 and 150 mm/sec. by a combination of
  • zirconium-nickel alloys (Zr/Ni),
  • TiO 2 titanium dioxide
  • the acrylate is added for simple reasons of mechanical strength, since it does not impart any improved burning properties to the pyrotechnical charge, but rather somewhat reduces its burning rate, while the major function of the stearate addition is to increase the compressibility of the batch and to reduce its sensitivity to friction.
  • Other components are included to provide the desired burning rate and burning intensity.
  • the lead dioxide, the bismuth trioxide and zinc stearate are never included in the delay charges where a calm burning process is desired, but only in ignition charges where a cascade-like burning is desired, while tin dioxide and titanium dioxide are never included in the ignition charges.
  • This will give the following general compositions for delay charges and ignition charges, respectively, according to the invention.
  • the acrylate binder shall be an aqueous dispersion and shall not influence the burning properties of the pyrotechnical charge more than is necessary. Moreover, naturally, the binder shall not contain components which have not reacted to completion and which, in the long term, may affect the storage life of the pyrotechnical charge. Both of these latter requirements render certain aqueous dispersible acrylates more suitable for this purpose than others.
  • acrylate dispersions of an anionic active character based on acrylic and metacrylic acid esters with a Tg of approximately 20° C. are extremely well suited for this purpose.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Air Bags (AREA)
  • Central Heating Systems (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Compositions Of Oxide Ceramics (AREA)
US07/248,707 1987-09-29 1988-09-26 Method for producing a pyrotechnical charge Expired - Fee Related US4853052A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8703742A SE460848B (sv) 1987-09-29 1987-09-29 Saett att framstaella pyrotekniska foerdroejnings- och anfyringssatser
SE8703742 1987-09-29

Publications (1)

Publication Number Publication Date
US4853052A true US4853052A (en) 1989-08-01

Family

ID=20369699

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/248,707 Expired - Fee Related US4853052A (en) 1987-09-29 1988-09-26 Method for producing a pyrotechnical charge

Country Status (8)

Country Link
US (1) US4853052A (es)
EP (1) EP0310580B1 (es)
AT (1) ATE78011T1 (es)
DE (1) DE3872639T2 (es)
ES (1) ES2034394T3 (es)
GR (1) GR3005789T3 (es)
NO (1) NO169116C (es)
SE (1) SE460848B (es)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339624A (en) * 1990-11-23 1994-08-23 Nobelkrut Ab Ramjet propellants
US5372070A (en) * 1992-02-10 1994-12-13 Thiokol Corporation Burn rate modification of solid propellants with bismuth trioxide
US5541009A (en) * 1993-03-08 1996-07-30 Buck Werke Gmbh & Co. Process for preparing water-based pyrotechnic active compositions containing metal powder, coated metal powders and use thereof
US6170399B1 (en) 1997-08-30 2001-01-09 Cordant Technologies Inc. Flares having igniters formed from extrudable igniter compositions
US6224099B1 (en) 1997-07-22 2001-05-01 Cordant Technologies Inc. Supplemental-restraint-system gas generating device with water-soluble polymeric binder
US20050183805A1 (en) * 2004-01-23 2005-08-25 Pile Donald A. Priming mixtures for small arms
US20050258159A1 (en) * 2004-05-20 2005-11-24 Alexza Molecular Delivery Corporation Stable initiator compositions and igniters
WO2006083379A3 (en) * 2004-11-30 2006-11-30 South Dakota School Of Mines A Nanoenergetic materials based on aluminum and bismuth oxide
US7581540B2 (en) 2004-08-12 2009-09-01 Alexza Pharmaceuticals, Inc. Aerosol drug delivery device incorporating percussively activated heat packages
US8387612B2 (en) 2003-05-21 2013-03-05 Alexza Pharmaceuticals, Inc. Self-contained heating unit and drug-supply unit employing same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE505912C2 (sv) 1995-12-20 1997-10-20 Nitro Nobel Ab Pyroteknisk laddning för sprängkapslar
DE19548544A1 (de) * 1995-12-23 1997-06-26 Dynamit Nobel Ag Initialsprengstoff-freie Anzündmischung
KR100545187B1 (ko) * 1997-09-04 2006-01-24 앨리언트 테크시스템즈 인코포레이티드 압출가능 점화약 조성물로 형성된 점화약을 갖는 조명탄
AU2006212875B2 (en) * 2005-02-08 2011-06-02 Dyno Nobel Inc. Delay units and methods of making the same
CL2007002677A1 (es) 2006-09-20 2008-05-02 African Explosives Ltd Metodo para fabricar una composicion pirotecnica de retardo que comprende mezclar un oxidante solido, un combustible solido y agua para formar una suspension acuosa, transformar la suspension en goticulas y secar por gas dichas goticulas para formar
CL2007002676A1 (es) * 2006-09-20 2008-02-22 African Explosives Ltd Proceso para producir composicion pirotecnica de retardo que comprende mezclar oxidante, combustible, surfactante y liquido para formar una pasta o suspension, secar la pasta o suspension para eliminar liquido y obtener un producto solido, tomar el p
WO2016075091A1 (de) * 2014-11-10 2016-05-19 Dynitec Gmbh Pyrotechnisches verzögerungselement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942445A (en) * 1974-09-18 1976-03-09 The United States Of America As Represented By The Secretary Of The Navy High altitude friction igniter
US3954530A (en) * 1966-03-08 1976-05-04 Ministry Of Defence Ignitable compositions comprising lead monoxide and boron
US4080227A (en) * 1977-06-06 1978-03-21 The United States Of America As Represented By The United States Department Of Energy Pyrotechnic filled molding powder
US4129465A (en) * 1977-07-21 1978-12-12 The United States Of America As Represented By The Secretary Of The Navy Smoke-generating composition
US4419153A (en) * 1981-05-21 1983-12-06 Aktiebolaget Bofors Pyrotechnical delay charge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1748288A (en) * 1925-09-08 1930-02-25 William S Heitmann Process for making tracer compositions
BE390851A (es) * 1931-09-23
GB391195A (en) * 1931-10-21 1933-04-21 Stanley Hector Lucas Improvements in and relating to light producing ignitable compositions
US2072719A (en) * 1935-05-10 1937-03-02 Ensign Bickford Co Slow-burning powder for fuses, etc.
US2123201A (en) * 1937-07-22 1938-07-12 Charles H Pritham Pyrotechnic compositions
US2457860A (en) * 1945-06-19 1949-01-04 Catalyst Research Corp Delay fuse compositions
CA1145142A (en) * 1980-10-10 1983-04-26 Alan L. Davitt Delay composition for detonators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954530A (en) * 1966-03-08 1976-05-04 Ministry Of Defence Ignitable compositions comprising lead monoxide and boron
US3942445A (en) * 1974-09-18 1976-03-09 The United States Of America As Represented By The Secretary Of The Navy High altitude friction igniter
US4080227A (en) * 1977-06-06 1978-03-21 The United States Of America As Represented By The United States Department Of Energy Pyrotechnic filled molding powder
US4129465A (en) * 1977-07-21 1978-12-12 The United States Of America As Represented By The Secretary Of The Navy Smoke-generating composition
US4419153A (en) * 1981-05-21 1983-12-06 Aktiebolaget Bofors Pyrotechnical delay charge

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339624A (en) * 1990-11-23 1994-08-23 Nobelkrut Ab Ramjet propellants
US5372070A (en) * 1992-02-10 1994-12-13 Thiokol Corporation Burn rate modification of solid propellants with bismuth trioxide
US5541009A (en) * 1993-03-08 1996-07-30 Buck Werke Gmbh & Co. Process for preparing water-based pyrotechnic active compositions containing metal powder, coated metal powders and use thereof
US6224099B1 (en) 1997-07-22 2001-05-01 Cordant Technologies Inc. Supplemental-restraint-system gas generating device with water-soluble polymeric binder
US6170399B1 (en) 1997-08-30 2001-01-09 Cordant Technologies Inc. Flares having igniters formed from extrudable igniter compositions
US8387612B2 (en) 2003-05-21 2013-03-05 Alexza Pharmaceuticals, Inc. Self-contained heating unit and drug-supply unit employing same
US9370629B2 (en) 2003-05-21 2016-06-21 Alexza Pharmaceuticals, Inc. Self-contained heating unit and drug-supply unit employing same
US8991387B2 (en) 2003-05-21 2015-03-31 Alexza Pharmaceuticals, Inc. Self-contained heating unit and drug-supply unit employing same
US8597445B2 (en) * 2004-01-23 2013-12-03 Ra Brands, L.L.C. Bismuth oxide primer composition
US8128766B2 (en) * 2004-01-23 2012-03-06 Ra Brands, L.L.C. Bismuth oxide primer composition
US20120125493A1 (en) * 2004-01-23 2012-05-24 Pile Donald A Bismuth oxide primer composition
US8784583B2 (en) * 2004-01-23 2014-07-22 Ra Brands, L.L.C. Priming mixtures for small arms
US20140305555A1 (en) * 2004-01-23 2014-10-16 Ra Brands, L.L.C. Priming Mixtures for Small Arms
US20050189053A1 (en) * 2004-01-23 2005-09-01 Pile Donald A. Bismuth oxide primer composition
US20050183805A1 (en) * 2004-01-23 2005-08-25 Pile Donald A. Priming mixtures for small arms
US7402777B2 (en) 2004-05-20 2008-07-22 Alexza Pharmaceuticals, Inc. Stable initiator compositions and igniters
US7923662B2 (en) 2004-05-20 2011-04-12 Alexza Pharmaceuticals, Inc. Stable initiator compositions and igniters
US20050258159A1 (en) * 2004-05-20 2005-11-24 Alexza Molecular Delivery Corporation Stable initiator compositions and igniters
US7581540B2 (en) 2004-08-12 2009-09-01 Alexza Pharmaceuticals, Inc. Aerosol drug delivery device incorporating percussively activated heat packages
WO2006083379A3 (en) * 2004-11-30 2006-11-30 South Dakota School Of Mines A Nanoenergetic materials based on aluminum and bismuth oxide

Also Published As

Publication number Publication date
SE8703742D0 (sv) 1987-09-29
SE8703742L (sv) 1989-03-30
SE460848B (sv) 1989-11-27
DE3872639T2 (de) 1993-03-11
NO884281D0 (no) 1988-09-27
EP0310580A3 (en) 1990-01-10
NO884281L (no) 1989-03-30
ES2034394T3 (es) 1993-04-01
EP0310580B1 (en) 1992-07-08
NO169116C (no) 1992-05-13
DE3872639D1 (de) 1992-08-13
ATE78011T1 (de) 1992-07-15
EP0310580A2 (en) 1989-04-05
NO169116B (no) 1992-02-03
GR3005789T3 (es) 1993-06-07

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Legal Events

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AS Assignment

Owner name: AKTIEBOLAGET BOFORS, S-691 80 BOFORS, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:CALSSON, STAFFAN;BOBERG, TORE;SJOQVIST, CONNY;REEL/FRAME:004944/0412

Effective date: 19880914

Owner name: AKTIEBOLAGET BOFORS,SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CALSSON, STAFFAN;BOBERG, TORE;SJOQVIST, CONNY;REEL/FRAME:004944/0412

Effective date: 19880914

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Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 20010801

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362